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# Implementation Summary

**Session ID**: `phase17-session02-server-notice-manager-persistence-and-context` **Package**: `apps/server` **Completed**: 2026-06-05 **Duration**: 0.2 hours

***

## Overview

Implemented the server-owned Notice Board parity manager as a persistent, room-scoped local-state service. The session replaced the short-lived in-memory stub with startup load, debounced atomic save, shutdown flush, cap enforcement, room and target filtering, context generation, resolution, ingest dedupe, batch ingest, pruning, and auto-post dedupe while keeping the existing compatibility surfaces for current routes and WebSocket callers.

The work stayed local-only. It did not introduce hosted transfer, external storage, or broader identity/audit claims.

***

## Deliverables

### Files Created

| File                                                                                                           | Purpose                                      | Lines |
| -------------------------------------------------------------------------------------------------------------- | -------------------------------------------- | ----- |
| `.spec_system/specs/phase17-session02-server-notice-manager-persistence-and-context/validation.md`             | Validation record for the completed session. | \~20  |
| `.spec_system/specs/phase17-session02-server-notice-manager-persistence-and-context/IMPLEMENTATION_SUMMARY.md` | Session closure summary.                     | \~70  |

### Files Modified

| File                                                                                          | Changes                                                                                         |
| --------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- |
| `apps/server/src/managers/noticeBoard.ts`                                                     | Added persistent Notice Board state, filtering, context, pruning, dedupe, and cleanup behavior. |
| `apps/server/src/server.ts`                                                                   | Wired manager cleanup into server shutdown.                                                     |
| `apps/server/src/ws/handlers.ts`                                                              | Preserved compatibility notice posting for canonical and legacy payload shapes.                 |
| `apps/server/tests/noticeBoard.test.ts`                                                       | Added focused manager coverage for persistence, filters, context, ingest, pruning, and dedupe.  |
| `apps/server/tests/routes.test.ts`                                                            | Added isolated Notice Board state for regression coverage.                                      |
| `apps/server/tests/websocket.test.ts`                                                         | Added isolated Notice Board state for regression coverage.                                      |
| `apps/server/tests/authBoundaries.test.ts`                                                    | Added isolated Notice Board state for regression coverage.                                      |
| `.spec_system/specs/phase17-session02-server-notice-manager-persistence-and-context/spec.md`  | Marked the session complete.                                                                    |
| `.spec_system/specs/phase17-session02-server-notice-manager-persistence-and-context/tasks.md` | Confirmed all tasks complete.                                                                   |
| `.spec_system/PRD/phase_17/session_02_server_notice_manager_persistence_and_context.md`       | Marked the session complete in the phase session stub.                                          |
| `.spec_system/PRD/phase_17/PRD_phase_17.md`                                                   | Updated the phase progress tracker and completion date for Session 02.                          |
| `.spec_system/state.json`                                                                     | Recorded Session 02 completion and cleared the current session.                                 |
| `package.json`                                                                                | Bumped the root patch version from `0.1.119` to `0.1.120`.                                      |

***

## Technical Decisions

1. **Manager-owned persistence**: Kept persistence, filtering, pruning, and cache invalidation in `NoticeBoard` so later route and relay sessions can reuse one validated boundary.
2. **Instance-scoped test isolation**: Passed explicit notice-board state roots into server tests so persistent local files do not leak across suites.

***

## Test Results

| Metric   | Value                                                                                                                               |
| -------- | ----------------------------------------------------------------------------------------------------------------------------------- |
| Tests    | Focused manager tests, route compatibility tests, WebSocket compatibility tests, auth boundary tests, typecheck, format/lint checks |
| Passed   | All checks passed                                                                                                                   |
| Coverage | N/A                                                                                                                                 |

***

## Lessons Learned

1. Persistent local-state work needs explicit test isolation to avoid cross- suite leakage.
2. Compatibility surfaces are easier to preserve when the canonical manager owns normalization and cloning.

***

## Future Considerations

Items for future sessions:

1. Wire the canonical `/notice-board` route family in Session 03.
2. Add the remaining session-specific surfaces for cockpit, CLI, hooks, and War Room relay parity.

***

## Session Statistics

* **Tasks**: 24 completed
* **Files Created**: 2
* **Files Modified**: 13
* **Tests Added**: 2
* **Blockers**: 0 resolved


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